Number | Date | Country | Kind |
---|---|---|---|
17232/70 | Nov 1970 | CH |
Number | Name | Date | Kind |
---|---|---|---|
3309213 | Pugin et al. | Mar 1967 | |
3391104 | Harris et al. | Jul 1968 | |
3489713 | Bowman et al. | Jan 1970 | |
3523117 | Pugin et al. | Aug 1970 |
Entry |
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Def. Pub. T883,028 to Newland et al., filed 3-29-68. |